Embossing-press.



R. MARX.

EMBOSSING PRESS.

APPucMloN mso oms. 19m.

lPate'nt-ed Sept. 18, MU.

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EMBosslNG PRESS.

APPLICATION FILED DEC5 I9I4. I. ,@4@,'75 Invnt'vd :MII

6SHEETS--SHEET :IIITIIIIIIII-I H. MARX.

EMBOSSING PRESS.

APPLICATION FILED 0505, m4.

i lntelltedbcpl. 16, 191?.

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PPLICATIH HLEU BEC. 5) 19M.

yegpfo Patented Sept. 18, 1917.

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EMBOSSING PRESS.

APPLlcATloN man DEc.5.1914.

Paented Sept. 18, W1?.

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aMaossmG PRESS, APPLICATION FILED DEC-5| 1914.

y4?5 Patentedept. 18, i917?.

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.Agb w RICHARD MARX, F PHILADELPHIA, PENNSYLVANIA, ASSIGNOR TO DEFIANCE MANUFACTURING COMPANY, OF SUMMEBDALE, PENNSYLVANIA, A CORPORA- TION 'OF PENNSYLVANIA.

EMBOSSING-PRESS.

Specification of Letters Patent.

Patented sept. its, 19117.

To all whom it may comer/n.:

Be it known that I, RICHARD MARX, a citizen of the United States, residing in Philadelphia, Pennsylvania, have invented certain Improvements in Embossing-Presses, of which the following is a specification.

One object ot my invention is to provide a machine for' embossing leather., cardboard and the like, which shall produce a uniform grade of goods regardless of variations in the thickness of the stock, the inventioncontemplating a novel combination of parts designed to be automatically adjusted at each stroke of the machine in order that the embossing dies may be pressed a uniform distance into the body of material.

I also desire to provide a machine of the above noted character which shall include means for subjecting the body of material under treatment to a preliminary pressure and .thereafter to the Jfull pressure required to properly complete the embossing operaf tion.

Another object of the invention is to provide novel means for automatically adjusting and holding one of the dies of an embossing or stamping machine preparatory to its working stroke, with a view to causing it to give impressions of uniform depth to the material operated on regardless of its thickness.

It is also desired to provide a novel combination of cams for securing the above noted uniform action, together with novel and relatively simple means for adjusting said mechanism to vary the depth of an impression made.

These objects and other advantageous ends I secure las hereinafter set forth, reference being had to the accompanying drawings, in which Figures 1 and 2 are respectively a front and a side elevation of an embossing press constructed according to my invention;

Fig. 3 is a vertical section of the press, taken on the line a-a Fig. l;

Fig. 4 is an elevation, partly in vertical section and on an enlarged scale, illustrating the detail construction of the wedge operating mechanism;

Figs. 5 and 6 are respectively an enlarged front elevation partly in section and a sectional plan, the latter being taken on the line b-b Fig. 4;

Figs. 7 and 8 are two enlarged vertical sections, taken at right angles to each other, illustrating the detail construction of the cam mechanism;

Fig. 9 is an enlarged vertical section illustrating the preferred means for holding the adjustable cam spindle;

Fig. is an elevation of the end of the 1 spindle shown in Fig. 9, and

Fig. 11 is a side elevation of the upper part of the machine.

In the above drawings, l represents the main frame of the machine, which is supported on legs 2 and at its upper portion is provided with bearings for a continuously operating driving shaft 3. This has fixed to it a Hy wheelV 4 and a pinion 5, the latter being so placed as to mesh with the teeth of a gear wheel. 6 loosely mounted on the main cam shaft 7 For connecting said vgear and cam shaft at will, I provide any suitable ormof clutch, and in the present jinstance I have shown a well-known form of pin clutch whose controlling member 8 is connected to one end of a link 9 Whose opposite end is attached to a lever 1() fulcrumed on a bolt 11 carried'by one of the legs 2. This lever is provided with a series o teeth meshing with similar teeth on one arm of a foot lever 12, the arrangement being such that the depression of said latter lever by the operator causes a downward movement of the rod 9 and such an operation of the member 8 as permits the movable clutch element 13 to operatively connect the gear 6 and the shaft 7. This latter shaft is suitably journaled in the upper part of the frame 1, and at that end opposite the gear 6 has fixed to it a cam 14 (Fig. 4), while between its two bearings said shaft is formed with three eccentric or cam portions 15-15 and 16. Of these latter, the parts 15 are similar, and their rise is less than that of the cam 16, which is between them (Figs. 7 and 8). j

Mounted on the front portioln of the frame 1 are guideways 17 for the reception ot a vertically movable head 18 normally held in an upper or raised position by a pair of springs 19 extending between pins on its lower part and` other pins on the frame 1. rThe upper part of this head (Fig. 7 has rotatably mounted in it a spindle 20, which carries a pair oi rotatable rings '21 placed to respectively engage the two cams 15, it being noted that said rings are mounted on portions of said spindle which are concentric' with the axis thereof. Between the 'rings is a roller 22 having antifriction bearings interposed between it and a part 23 of the spindle 2O which is eccentric to its axis, and the proportions of this roller 22 are such that its cylindrical surface. co-acts with the face of the cam 16. For adjusting the spindle 20, I extend one of its ends beyond the side of the head 18 and form in it radial holes 24 for the reception of a suitable Spanner wrench. For locking said spindle in any adjusted position I form in the head a radial passage and mount in this a pin or rod 25 of such length that it projects for a short distance `into a passage 26 at right angles to it. In this latter passage I thread a bolt 27 having a tapering portion 28, the arrangement being such that screwing this bolt into said passage 26 causes a tapering' portion 28 thereof to engage the end of the rod 25 and to force it into holding engagementy with the shaft 20.

Any suitable form of die 29 is mounted on the lower end of the reciprocating head 18 and as shown in Figs. 1, 3 and 5, there is fixed to the frame a base block 30 having in its top face a recess extending from front to rear formed by side member 31, and within this recess is a block 32 normally pressed upward by spring 33 and held from moving out of the recess in the base block by overhung plates 34 fixed on the top of the side members 31. Other plates are provided for preventing longitudinal movement of this block 32 in whose lower face is provided a recess for the reception of a wedge 35 which also extends into a corresponding recess extending front to rear in the block 30. This wedge at its rear end is connected through a'link 36 to the lower end of a lever arm 37 iixed to a shaft 38 journaled in the upper part of the frame 1 and likewise having fixed to it two other arms 39 and 40, of which the first is at all times drawn toward the rear by a spring 41, 'so as to tend to move the large end of the wedge 35 into the recesses of the base 30 and block 32. The upper end of the arm 40 carries a roller 42 so placed as to be operated on by thecam 14. The lower die carriage 43 is'slidably mounted in an undercut guide-way formed in the top face of the block 32, and in the present instance has arms 44 extending laterally from it and each provided with an adjustable gage 45.

The upper die 29 is supported from the head 18 by any suitable form of die block l47, and this is designed to be heated by gas dames or any other suitable means, the device employedv in the present instance consisting of two oppositely disposed gas delivery pipes or burners 48 carried by brackets 49 at the sides of the trame 1.

In order to adjust the machine the bolt 27 is loosened and the spindle 20 is rotated so that its eccentric portion 23 moves the roller 22 such a distance out of center relatively to the rings 2]. that when it is engaged by the cam 16, said rings are held some distance from the cams 15, depending upon the work to be done. lVhen, therefore, by pressing the treadle 12 the rod 9 is moved downwardly and the clutch member 13 is permitted to connect the gear 6 and the shaft 7, the cam 14 shortly thereafter engages the roller 42, thus turning the levers 40 and 37 and moving the wedge 35 longitudinally from under the block 32 and guide carriage 43, it being understood that the material to be embossed has been previouslw7 placed upon the die carriage and introduced under the upper die 29.

The rotation of the shaft 7 now causes lits two cams 15 to engage the rings 21 on the head 18, thus forcing down the latter and causing the upper die 29 to engage the material on the lower die carriage 43 thereafter moving said carriage with the block v32 downward in the recess of the base member 30, against the actionof the springs 33. Obvlously, the amount of this downward movement will depend upon the thickness of the material between the dies, and the pressure exerted will similarly depend 4uponl the proportions of the springs 33. Immediately after this operation, the cam 14 passes from under the roller 42, thus releasing the lever arm 40, and allowing the spring 41 to forcibly drawthe wedge 35 into thel recesses between 'the base 30 and the block `32 thereby making impossible any further downward movement of said block. The continued turning of the shaft 7 thereafter causes its cam portion 16 to 'engage the roller 22, which has previously been given an eccentricity determined bythe work to be done, and as a consequence the head 18 with the upper die is forced farther 'downward so that said die is pressed into the leather or other material to4 be embossed for a predetermined distance which obviously is absolutely independent of its thickness. After a certain dwell, depending on the proportions of the cams 16 and 15, the first of these disengages the roller 22 and immediately thereafter the latter disengages the rings 21, whereupon the head 18 is drawn upwardly by the springs 19. The work may now be removed and replaced by another piece to be embossed.

I claim 1. The combination in a press of two movably mounted dies; means for moving one of the dies toward the other to cause a piece ranma@ ing the second die from mow ement after said gripping; and means for thereafter moving the first die still nearer the second die to make a complete impression.

2. The combination in a press of a supporting frame; a head movable therein; a die carried by said head; a second die mounted on the frame and movable in the' line of the head toward and from the same; two devices for successively moving the head and its die toward the second die; andy means for preventing movement of said second die after the iirst of said dies is actuated.

3. The combination in a press of a supporting frame; a head slidable therein; a die for said head; a second die yieldingly mounted on the frame; two devices for successively moving the head with its die toward the second die; a locking device for preventing movement of the second die under predetermined conditions; and means for causing action of the locking means after the first head moving device has acted and before the action of the second head moving device.

4. The combination in a press of a supporting frame; a die 'yieldingly supported thereon; a second die movably mounted on the frame; two members for independently actuating said second die; a device for preventing yielding of the first die relatively to porting frame; a die slidably mounted thereon; means for reciprocating said die; a second die movably mounted on the frame;

a wedge for stopping movement of the second die; means including a cam for moving the wedge to a die-releasing losition;

and a spring operative to move said wedge o a position preventing movement of said 9. The combination in a press of a supporting frame; a die movably mounted thereon; a second die placed to coperate with the irst die; and means for actuating said rst die, the same consisting of a shaft; two cams thereon; with members connected to the die and placed to respectively cooperate with said cams.

10. The combinationin a press of a supporting frame; a die movably mounted thereon; a second die placed to cooperate with the first die; and means for actuating said first die, the same consisting of a shaft; two cams thereon; two members connected to the die and placed' to respectively cooperate with said cams' and means for adjuting one of the cams independently of the ot er.

11. rlhe combination in a press of a supporting frame; two dies thereon; and means for actuating one of said dies, including a rotary shaft; three cams on said shaft the frame; and Vmeans for causing action i Connected t0 the die t0 be atllated, 0f which said device after one of the die actuating" members has operated but before the operation of the second member.

i 5. rlhe combination in a press of a supporting frame; a reciprocating die thereon; two cams mounted to successively actuate said die; a second die movably mounted on the frame in position to coperate with the first die; with mechanism for automatically locking the second die from movement after the operation of the rst die by one of the cams and before its operation by the second cam.

6. The combination in a press of a frame; a reciprocating die thereon; two devices for successively actuating said die; a second die movably mounted on the frame' a wedge; and means for automatically interposing said wedge between the second die and a -part ofthe frame after the operation of the first die by one of its actuating devices and before its actuation by the others 7. The combination in a press of asup` porting frame; a die reciprocable thereon; means for actuating said die; a second die mounted on the frame and free to -move under the action of the iirst die; and means for stopping movement of the second dieafter it has progressed for a distance de; pendent upon the thickness of the material operated on.

8. The combination in a4 press of a sup-" certain are positioned to coperate with the similar cams on the shaft and another cooperates with the remaining cam.

' 12. The combination in a press of a frame; a head reciprocable thereon; a dieY carried by said head; a second die movably 'mounted on the frame; a driving shaft; twodissimilar cams on `said shaft; two members mounted on the head and placed to Vof which two are similar; and members respectively coperate with the cams to move the head to di'erent extents;,and a device for automatically holding the second die against movement after, the rst die has been actuated by one of said cams. u

13. The combination vin a press of a supporting frame; a head reciprocable thereon; a spring normally acting to hold said head 1n a raised position; two rollers carried by the head; a driving shaft; two cams mounted on said shaft in positions to respectively co erate with said rollers to move the head c against the action of its spring; a die carimm said head for different distances; a second die; springs interposed between said second die and the frame; a Wedge slidable between the second die and a portion of the frame; a cam actuated device for moving the wedge in one direction; and a spring for causing movement pf the wedge in van opposite d-irection.

15. .The combination in a press of a supporting frame; a head slidably movable thereon; a die carried by said head; a driving shaft on the frame; two cams 011 said shaft; a' roller and a cam on the head placed to respectively coperate with said shaft carried cams; a second die; springs interposed between said second die and the frame; a Wedge slidable between the second die and a portion of the frame; a cam actuated device timed to hold the wedge in a released position during the action of one of the shaft carried cams; with means for moving the wedge into position to prevent movement of the second die during the time of action of the second shaft carried cam.

16. The combination in a press of two dies; means for moving one of the dies to cause a piece of material to be gripped between it and the second die with a redetermined pressure; means thereafter locking said second die from further movement; and a device operative upon the first die after the second die has been locked to cause an increase of the pressure exerted on' the material.

In testimony whereof, I have signed my name to this specification, in the presence of two subscribing witnesses.

RICHARD MARX.

Witnesses:

WILLIAM E. BRADLEY, WM. A. BARR. 

